What Is the Minimum Power Required for a Heat Pump to Maintain 20°C?

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SUMMARY

The minimum power required for a heat pump to maintain a house at 20°C with a heating load of 10kW and an outside temperature of -5°C is calculated using the formula for the Coefficient of Performance (COP). The COP is determined by the temperatures involved, yielding a COP of approximately 11.73. Consequently, the minimum power needed to drive the heat pump is 0.85 kW, ensuring efficient heating under specified conditions.

PREREQUISITES
  • Understanding of thermodynamics, specifically the principles of heat transfer.
  • Familiarity with the Coefficient of Performance (COP) in heat pump systems.
  • Basic knowledge of heating load calculations.
  • Awareness of temperature conversion between Celsius and Kelvin.
NEXT STEPS
  • Research the principles of heat pump efficiency and COP calculations.
  • Explore different types of heat pumps and their applications in residential heating.
  • Learn about the impact of external temperatures on heat pump performance.
  • Investigate advanced heating load calculation methods for energy-efficient home design.
USEFUL FOR

Homeowners, HVAC engineers, energy efficiency consultants, and anyone involved in residential heating system design and optimization.

samirnasri
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Hello,
Just wondering if you could help me out with this question;

A house is to be maintained at 20°C in winter and the heating load is 10kW. The
outside temperature is -5°C. If a heat pump is to be used to heat the house,
what is the minimum power required to drive the heat pump?

Would it be


273.15+20 / 25 = 11.73

10 / 11.73 = 0.85 kw?
 
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